Drilling-machine.



No. 766,883. PATENTED AUG. 9, 1904. F. W., A. G. & E. A. HOEFER.

DRILLING MACHINE.

APPLIUATION 12mm FEB. 25. 1901.

4 SHEETS-SHEET 1.

H0 MODEL.

No. 766,883. PATENTBD AUG. 9, 1904.

F. W., A. G. & E. A. HOEFER.

DRILLING MACHINE.

APPLICATION FILED FEB. 25, 1901.

PATENTBD AUG. 9, 1904. F. W., A. G. & E. A. HOEFBR.

4 SHEBTS-SHEET 3.

. )zmmp;

DRILLING MACHINE.

APPLICATION FILED FEB. 25. 1901.

110 MODEL.

No. 766,883. PATENTED AUG. 9, 1904. F. W., A. G. & E. A. HOEFBR. DRILLING MACHINE.

APPLICATION FILED 1 1113.25. 1001.

4 SHEETS-SIIEBT 4.

N0 MODEL.

M w Q m A angles thereto.

" .Unrrnzo STATES Patented .Augr'natfl, 19 01. i

PATENT" OFFICE.

FREDERICK ll. HU'EFER. .llftzil'k 'l G. llUEFl-Ilt. ASl) l'lllll'i A. l-lOl'IFl Ili, (3F FREEPOR'I, lLLlNtllS. .XSSIUKURS TU llUl'Ill'llt MAXI.lAUlUltlNti POM PANY, OF FlllllilOH'l, ILLINOIS. A (jtfiltltllL-VPION ()F .lLlJbZUlS.

neutrino-Macrame.

SPECIFICATION forming part al Letters Patent No. 166,883, tinted Angina: 9, 1904.

Application filed February 25, 1901. Serial lie. 413.1555. kiln model.) i i To all wh-mnit nmy concern: t

Be it known that we. Fnnonmrnll". lint:-

rnn, Anonn'r ti. llOI-IFl-Tit. and E31". A. llon- 7 supported by the hose A and provided with FER, citizens of theUnited States of America. 5 residing, at Free port, in the county of Stephenson and State of Illinois, have invented certain new and useful improvements in Drilling- Maehines, of which the following is a speeili cation.

m Ourinvention relates to the clnssof drillingmachines commonly known as 1io\\'er-dri lls;" and it consists of-eertnln new and useful features of construction and QUIIll)llllli.i-Oll$ of ports hereinafter fully described. and speeilic- 5 nlly pointed out in the claims.

Referring to the nceompam'ing drnwil'in's. which form a part of this specification, Figure 1 is an isometrie view of n drill emhodying our improvements. Fin. '2 is a like view of the same with slight modifications that will he fully pointed out hereinafter. Fig. 3 is a side elevation of, the back gears of the drill. a clutch, and a cam-lever for operating the some. Fig. d is an enlarged detail view of 5 the parts shown in Fig. 3. Fig. 5 is a side view of the enmdever. an edge view whereof is clearly shown in Fig. 4. Fig. ti is adetniled view of an eccentric shaft whereon the camdever shown in Fig. 5 and the two lower 3 hnck' enrs of the drill are mounted. Fig. 7 is a section through the dotted line i 7 in Fig. 1 and enlarged detail view of parts iidjaeent thereto. Fig. 8 is a section through the dotted line 8 8 in Fig. 1 and an enlarged detail view of parts adjacent thereto, other parts also being omitted; Fig. 9 is an isometric view of parts shown in Fig. 8 with other parts omitted.- Fig. 10 is a top plan view of the plntemhracket of the drill. Fi 'r. 11 is a side 4 elevation of a portion of the drill shown in Fig. .2 with some parts broken away and others omitted. F ig. 12 isadetaehed fragmentaldetail view of parts shown in Fig. 11 with ndditional parts as seen when viewed at right Fig. 13 is a transverse section of an eecentric-sleeve hearing and a shaft mounted therein that will be fully described hereinafter.

Lil-:o letters of reference indicate corresponding parts throughout the several news. 5 A is the column of thmlrill-i'rnine, wlnehri;

trifnreations A A A, having hearings A A" A A A. A'" A" A A therein and thereon for supporting parts to he described hereinafter.

B is n plateirln'aeket having ncirtnlnr opening 15' therein toadapt it to admit theret-hrongl: and to slide up and down on the column A n-nd also provided with n seinieirenlnr slot 13*, extending vertically therethrongh and concentrio with .sneh eirenlnr opening 15'.

B is a platen mounted on the platen-ln'noket ll hy means of a stud (not. shown) projecting from the under side thereof into the eirenlar opeix-inp ii in the free end of the plntem bracket 15 or in any other desired nnmner.

(J is n platervsup m-rting nnt projecting underneath hoth edges of the semicircular slot ll in the plnlen'lirncket B.

C is a platen '-ndjnsting screw passing through and adapted to operate the plateneupportim nut (1, having a -vertioal socketlJJiU'iII}: U in the base A of the drill and prrr vided with any snitahle means, as l-nitengears U (3 and a crank for operating the tonne.

The employnwnt of the semicircular slot B in the platen-bracket B and the platen-supporting net (I. projecting; below and beneath hoth edges of such eireulnr slot B. so dis- 8o tributes the weightol' the platen Bnnd its burden on said phiten'supporting not C that the latter travels vertically and does not bind upon or tend to kink the plated-adjusting screw G when it is operated to raise or lower the platen.

1) is a drill-spindle sleeve provided with the ordinary ope'rating rack D and mounted in the vertical hearing A.

l) is a drilhspindle passing through the drill-spindle sleeve D and the bevel-gear I), rotating in and traveling vertically with the former, l). and sliding vertically througlrand rotating with the. latter, 1), by reason of spline connection therewith.

E is. a hm-iznntnl shaft mounted in the part m V v rennet A and provided with a pinion l5. first therei to and nit-siding with the rarh ii" on the drillspindie sleeve it.

E is n wurm wheel fad to the :-lia t't F.

F is a vertical shaft provided at its lower end. with a worth i and at its upper end with a worm-wheel F. t'ast thereto and mounted in hearings i 1*" in the swinging: frame F. which is so mounted on the pintle F that the worm F can at will he swung lh'erehy intoand out of etnra renu-nt with the worm-wheel I i.-

l isa worm-stop socket in the swing-frame which carries the shaft F.

(i is a horizontal hearing in the part A of the drill-frame. having a cam-ti formed inone end thereof.

ii is the swiaging-frame-eontrolling: rodconneeted at one end ti somewhat loosely with the swinging frame 1"" and so nmunted in the hearin; U as to both slide endwise and reel; therein.

ti is a spring normally holding! the worm F. through the swinging frame i outof engagement with the worm-wheel if.

G is an ontwardl \'howed spring havin a hole ti therein and fast by one end G to the tlllllflfllltt. a

U is the swingziuwfralne-eontrolling rod cam-lever fast by one end to the outer end of such controlling-rod LE. provided with a pullout rain ti, working against the counter part cam (-11 and having a pin 6" projecting therefrom adapted to enter the hole (1? in the spring: ti and lock the same in the position shown in Figs. 8 and 9.

ll isa shaft mornted in the hearing A and provided with ii cone driving-pulley H.

H is a worm on the shaft H, constantly meshing with the worm-wheel F i i, Fig. 13; is an eccentric rock-sleeve mounted in the heat-hit, A and provided with a rockin lever l', integral or rigidlyconnected'thcrewith.

i. is a shaft mounted in the eccentric sleeve I and provided with a hand-wheel 1 fast thereto.

1 is a worm on the shaft 1, adapted to be thrown into and out of engagement with the worm wheel E by rocking the eccentric sleeve I back and forth by means of the lever 1.

I is a worm-stop which holds the worm F out of engagement with the worm-wheel E while the worm l is in engagement there with, and vice versa.

J is a ratchet fast to the shaft E.

J is a drill-spindle feed-lever, so mounted on the shaft E as to freely turn thereon and provided with a pawl (not shown) adapted to engage with and be disengaged from the ratchet J.

K. is thedrilhspindle drivingpshaftnnonnted in the hearings A A" A". having a cone-pulley ii and hovel-gear li' fast thereto the latter meshing witlrthe bevel-gear D and provided with a cone-pulley K, nnninted lmse thereon.

K. Fig. i. is a belt connecting the conepnlleys ii K".

Integral L I. are a pinion and the female niemher of a chiteh fast to the cone-pulley K and mounted loose on the shaft ii.

integral if I. area NW1! and the male men] her of a clnteh spline l to the shaft ii. so as to travel therewith and freely slide thereon. The gear If is also provided with a hub L integral therewith. hav ing a transverse annular groove If in the periphery thereof.

M is :2 eccentric r eli'shaft. the part M heiny; of greater diameter than the part M thereof, mounted in the hearing: A.

N is a cam-lever mounted on and fast to the part M of the roeh-shafthl and provided with two oppositely-im-linlnl cam-lugs N'- N, adapted to alternately" engage with the annular irroove I) in the huh L and therethrough throw. the gen r L into or out of ernzagcment with the pinion L. Y

O 0' are a concentric gear and pinion integral or rigidly connected and rotntahly mount: ed on the part M of the rock-shaft- M, so as to be thrown into and out of engagement. with the pinion and gear I. L by rocking the shaft M by means of the lever N.

The swinging frame F" and some parts connected therewith (shown in detail in Fig: 7) a re shownin slightly-modified form in Figs. 2, 1i. and 12, (which see.) and in order to avoid confusion in deserihin the same small letters of the alphabet have been employed in referring thereto.

r n", Fig. 12. are two fragments of the drillfrnme, (shown in Fig. 2,) having a supporting-l raeket t secured thereto by means of a Cap-screw r, a bolt w, and nut a, the bolte' being extended to form a rest I" for the drillspindle lever J'.

f is a swinging frame having hearings a" f" therein and mounted on a stud or pintle f", projecting horizontally from the drillfrarne.

It is a shaft mounted in the bearing a" and provided with a cone driving-"pulley It.

It is a worm on the shaft 1:, constantly meshin' with the worm-wheel F.

The mill-spindle Dmay be operated in the The worms F 1, Figs. 1 and 2, are both out of mesh with the worm-wheel E, which is fast to the shaft E, which carries the pinion E, that operates the drill-spimlle I) through its rack I). If it is desired to feed a. drill, by means of the spindle l)". uniformly and auto .niatically downward, the operator will raise the lever ti from the position shown in Figs. 1 and :2 to that shown in Figs. 8 and 9. The change of position of suchleveraeting, by reason of the joint operation of the cams G G", upon and through the rod (i and against usual manner by. means of the feed-lever J.

the spring (1 will swing the frame F fro1n 3 the position indicated by dotted lines X, Fig. 8, to the position there shown in solid lines, thereby bringing the worm F into mesh with the worm-wheel E and the free end of the stop I into engagement with the socket F which conjointly prevent the worm I" from engaging with the worm-wheel E so long as the worm F is in engagement therewith, thus preventing breakage that would result from both worms being in engagement with the worm-wheel E at the same time. Should it be desired to feed the drill-spindle D downward by means of the hand-wheel I", the worm F must be returned to the position shown in Figs. 1 and 2 and the lever I turned down ward, thereby turning the thin part of the eccentric rock-sleeve I downward until the worm I is in engagement with the wormwheel E. The free end of the stop will then rest against or in close proximity to the point Y, Fig. 7, on the swinging frame below the socket F therein, thereby preventing the worm F from engaging with the worn1- wheel E so long as the worm I is engaged therewith. With the pinion L in engagement through the clutch L L with the gear L and both out of mesh with the gear 0 and pinion 0, all as in Fig. 3, obviously the full speed of the shaft K would be communicated to the drill -spind1e D at the expense of power. Should power he desired at the expense of speed, turn the cam-lever N to the position shown in Fig. 4:. Such movement of the camlever N will cause the cam-lug N to disengage from and the cam-lug N to engage with the groove L in the hub L and therethrough disengage the part L of the clutch from the part L thereof and will also cause the lower gear and pinion to engage, respectively, with the upper pinion and gear through the rocking of the cam-shaft M from the position shown in Fig. 3 to that shown in Fig. 4,

thereby reducing the speed of the shaft K and drill-spindle D four times to gain power at the expense of speed.

We claim as' new and Letters Patent 1. In a drilling-machine, in combination, a column and its supporting base, a platenbracket, having a circular opening thereinto adapt it to admit therethrough, and to slide up and down, the column-and provided with a semicircular slot extending vertically therethrough and concentric with the circular opening in the platen -braeket,a platen-supporting nut, projecting underneath both edges of the semicircular slot in the platen-bracket and a platen-adjusting screw, passing through and adapted to operate the platen-supporting nut and having a bearing in the drill-base, substantially as and for the purpose specified.

2. In a drilling-machine, in combination, a drill-frame, a drill-spindle sleeve, carrying a spindle and provided with an operating-rack desire to secure by and mounted in a vertical bearingin the d riliframe, a horizontal shaft E, provided with a pinion E fast thereto and meshing with the rack on the drill-spindle sleeve, a worm-wheel E fast to the horizontal shaft E, a vertical shaft F, provided, at its lower end, with a worm F and, at its upper end, with a wormwheel F, a frame having a worm-sto p socket therein--carrying the vertical shaft F and so mounted, 'on the d rill-frame, that the worm F thereon can, at will, be thereby swung into, and out of, engagement with the worm-wheel E on the horizontal shaft E, an eccentric rocksleeve mounted in a horizontal bearing in the drillrframe, a shaft I mounted in the rocksleevc, a worm I fast to the shaft I and adapted to be thrown into, and out of, engagement with the worm-wheel E, on the horizontal shaft E, by rocking the eccentric sleeve back and forth, and a stop I -projecting from the free end of the worm I"--for holding the worm F out of engagement with the worm-wheel E, while the worm-wheel I is in engagement therewith, and vice versa, substantially as and for the purpose specified.

3. In a drilling-machine, in combination, a drill-frame, a drill-spindle driving-shaft K mounted therein,aconepulley K loose on the shaft K, an integral pinion L and female member L of a clutch fast to the cone-pulley K and mounted loose on the driving-shaft K, an in tegral gear L and male member L of a elutch splined to the dri\'ing-shaft K so as to travel therewith and freely slide thereon-provided with a hub L" having a transverse annular groove L in the periphery thereof, an eccentric rock-shaft Ma part M thereof being of greater diameter than the part M mounted, by the part M, in the drill-frame, a concentric gear and pinion O O, integral or rigidly connected, mounted on the part M of the shaft M, a cam-lever N, mounted on and fast to the part M of the rock-shaft M and provided with oppositely-inclined lugs N N adapted to alternately engage the annular groove L, in the hub L", and therethrough throw the gear L into and out of engagement with the pinion L, and, through the eccentric shaft M, throw the gear and pinion O 0 into and out of engagement with the pinion and gear L L, substantially as and for the purpose specified.

4. In a drilling-machine, in combination, a drill-frame, a swinging frame mounted thereon, a horizontal bearing G in the drill-frame having a cam G formed in one end thereof, a rod G connected, at one end, somewhat loosely, to the swinging frame, and so mount 'ed, in the bearing Gr, as to slide-endwiseand rock therein, a spring normally holding the swinging frame away from the bearing G, an outwardly-bowed spring G5, fast by its lower end to the drill-frame and having a hole G therein, a swinging-frame-controlling rod TIO cam-lever G fast, by one end, to the outer I end of the rod G provided with a pull-out cam G, Working against the cam G on the bearing G, and having a locking-pin pro ecting therefrom adapted to enter the hole Gr in the spring Gr, substantially as and for the purpose specified.

In testimony whereof We have signed our names to this specification in the presence of 

